<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{box-sizing: border-box;}
#box1{ 900px;height: 150px;border: 1px solid black;position: relative;}
#box2{ 900px;height: 150px;border: 1px solid black;position: relative;margin-top: 10px;}
#obox1{ 100px;height: 100px;background-color: red;margin-top: 25px;position: absolute;left: 0;top: 0;}
#obox2{ 100px;height: 100px;background-color: red;margin-top: 25px;position: absolute;left: 0;top: 0;}
</style>
</head>
<body>
<div id="box1">
<div id="obox1">
</div>
</div>
<div id="box2">
<div id="obox2">
</div>
</div>
</body>
<script type="text/javascript">
var box1 = document.querySelector("#box1");
var box2 = document.querySelector("#box2");
var obox1 = document.querySelector("#obox1");
var obox2 = document.querySelector("#obox2");
box1.onmouseenter = function(){;
move(obox1,{left:600,top:150},function(){
alert("结束了")
})
}
box1.onmouseleave = function(){;
move(obox1,{left:0,top:10})
}
box2.onmouseenter = function(){;
move(obox2,{left:0,top:300})
}
box2.onmouseleave = function(){;
move(obox2,{left:0,top:10})
}
function move (ele,obj,callback){
clearInterval(ele.t);
ele.t = setInterval(function(){
var onoff = true;
for(var i in obj){
var now = parseInt(getStyle(ele,i));
speed = (obj[i]-now)/7;
speed = speed>0? Math.ceil(speed):Math.floor(speed);
if(obj[i]!=now){
onoff = false;
}
ele.style[i]=now+speed+"px";
}
if(onoff){
clearInterval(ele.t);
//如果没有实参传入,会显示undefined,则不执行,去过有实参传入,会执行实参
callback && callback();
}
},30)
}
function getStyle(ele,attr){
if(ele.currentStyle){
return ele.currentStyle[attr];
}else{
return getComputedStyle(ele,false)[attr];
}
}
</script>
</html>